Shear sharpener



July 27, 1943. c. B. MOZDY SHEAR SHARPENER Filed July 22, 1949 INVENTOR. CZarZeaB. /%za BY y of order.

Patented July 27, 1943 SHEAR. SIHARPENER crimes B; (may, ne one;

1 invention "relates/to a shear"; I more particularlyfor use in sharpening barbers shears or the like, and. the objects of my inventionare:

First, to pro vide'alshear sharpener of this class "which is arranged to sharpen shears at various angles on the blades from the cutting edges thereof;

Second, to provide, a shear sharpener of this class in which a flat; -s'1noo'th',v "hard "surfaced abrasive sheet supportingpia'te is arranged to "support various grades of abrasive sheet ma- "terial thereon, for providing a number of different abraded corrugations in the sharpened shear cutting edges sharpened. 'byiny, shear sharpener;

'I'fhird, to provide a shear sharpener of this class which is particularly aclaptetl for use in sharpening barbers shears due. to the abrasive sheet used thereon, which provides sharp, well defined cormsatecl cutting portions on the edges thereof which reduce slippageof the hair relativelytherewith'to 'a'minimum when cutting the same;

Fourth, "to provide a shear sharpener or this class in'which'a guiderocl isreciproc'aliy moun'ted in a universally operative guide roe support ing sleeve for-convenientmanipulation fi'fihe shear sharpener and shears in connection j therewith whensharpjening the same; Y i e h 1 Fifth, to provide a novel. shear sharpener of this class; Sixth; to- .provide a shear sharpener not this ciassin which a tapered angle adjusting member is readily reversible or removable for Chang" ing the sharpening angle of theyshears being sharpened 'byiiny shear sharpener; I Seventh. to provide ashearrs'harpener of this class in Whifil'lihe angle adjusting member provides definite desired. angle-setting for repeating individual shear blade sharpening; and

. Eighth, to provide a shear sharpener of this class which is very simpleiancl economical of construction, accurate and efiie'ient in its action and which .Will

not readily deteriorate or glet out .With these antiother objectsjinview trill appear hereinafter, my invention consists ofucer tainnovel features of construction, combination anti arrangement or parts and portions as will be hereinafter described in .detaiil and "particularly set -forth in the appended claims, reference being had to the oacco-mpanyineidrawingand tio the characters of reference thereon'which f e a part of thisa plication in which:

c Figure 1 15 a longitudinal sectional traverse "be alternately arrange edges.

the: sharpener .stenststthe line 1 tree .2 showing ipart's and'portions elevation-to facilitate the..'il1ustrati0n and zalso showing ,portions o'f a pair of Y shearsin connection therewith; Fig. 2 is .a transverse sectional view taken fromfthe' line 2-52 of: Fig. 1 showing har'ts and portionsjinf elevation to facilitate thejilliis'imeition and also showin'glxportions or, apa'i-r ofv "shears in connection with my shear sharpener; j iig. 3 is a transverse ;.seetiori'al viewjtakenv from i the; line 3+3 01": Fig. j'l showing, parts and pertions (in elevation, to facilitate the illustration Ian'd is a fragmentary sectional View taken "rremlthe line l+ dfof Fig.1. I Similar characters,of-reference refer to si1nportions throughout the seuera'l ji'lar parts and 'sleevesupporting member 'ilIholt .i'lLLspaceri memjlber' H angleadiustine member "52 and the boits Hand 15 constitute the principal ,parts and porttions of my shear sharpener e The'ehrasivesheet supporting plate I is smooth, hard surfaced rec 'g'ulariy. shaped m emberf.and 'is preferably ,madeiof hp-late, i glass which provides a straight. even-hard sur f ace upon which positioned theJab'rasive -sheet '2. I "Theabrasive sheet lz isiprovidecl withan abrasive surface-which .is positioned outwardly from the abrasive sheet supilor'tingmpiate J and the opposite .endsiof the abrasive sheet arelffolcied lover taupe-site. ends of the labi'asivels'heet support.- ii g plate l, vasshownhest.inEi'gJ 1 of the drawti e The abrasive sheet.claniping' rnembers i3 and 31 me substantially iJrshaped in} cross section and these clamping me bers .3 and? are resilient an'dia're arrangectto clamp the abrasive sheet -32 yer the opposite--.encis oi abrasive shee't supperting plate 5 in the relation, as shown best 7 in .1; of the "drawing.-

It will merited that the abrasive sheet? is provided With an abrasive surface '2a,- which surface 'Za may he composed of relatively coarse or fine a asive; material as tclesirec'i. vSseve'ralseparate ahr isive sheetslniay 'd in eonneetion with the abrasive sheet supporting plate 1 ftoprbticieseveral iiifierent coarse or fineco'rrugated sharpeneel surfaces eneifier entshear blade cutting ],*rhe]shear blade: clientele-embers 751 are arranged to clamp thejeonventional blade clamping memberli and is provided with a,

her 8 by means of the outwardly extending trunnions 8a. which are positioned in holes 8a of the sleeve supporting member 9, as shown best in Fig. 3 of the drawing. The trunnions 8a are preferably integral with the guide rod supportlofwith an internally screw. threaded portion arscrew threaded portion extending outwardly from the shear blade clamping memberG' and '1 this screw threaded portion of the bolt l4. en-

gaged by the nut Ida; as shown best in Fig.1 of

the drawing. This nut Na in its screw threaded relation with the .bolt .l4 provides meanswhereby the shear blade clamping members 5, and 6 may be manually forced togetherqfor se-v'- curely holding the shear blade therebetween', as

' shown best in Fig. 1 of the drawing. Positioned intermediate the shear blade clamping members 5 and 6 on the bolt is aspring Mb which is'arrangedto force the shear' blade clamping members 5 and 6 into open position when released by the nut l flafor removing the shear blade from the shear blade clamping members 5 and 6,

The shear blade clamping; member 5 is proof the'guide rod T, a's's'hownbest in Figs; 1 and 2 of thedrawing. Positioned .on the bolt l3jad- Jacent the upper side of the flattened portion la of the guide rod 1 is a resilientwasher member vided with an angularly extending portion'at its upper end in which-is'fixied a bolt l3. This bolt. I3 extends upwardly through the angle adjusting'm'ernber l2 and the flattened end portion la J31; in engagement with the upper side .of which I I3. This nut I30 is provided with openings 13d in the side walls thereof arranged to'receive a through the bolt l3, as shown best in Figs. 1 "and 2 of the drawing. Positioned in the portion la of the guide rod land extending downwardly therefrom is a pin lb. This pin lb is arranged to engage the angular portions 5b. of the shear blade clamping member 5 when pivoted to a certain degree relatively with the guide rod 1.

The angle adjusting member [2 is positioned on the bolt is intermediate the'portion' 1a. of the guide rod 1 and the angularly extending poris a washer 136 against whichis positioned a nut V I30 screw threaded on the upper end of the bolt conventional 'cotter pin 13:: which extends 3 drawing.

ing sleeve member 8.

The sleeve supporting member 9 is provided ranged to engage the 'screwthreade'd portion Illa of the bolt I'D, as shown best in Fig. 3 of the \The guide rod 7, in engagement with theinternal bore 81) of the guide rod supportvingsleeve member 8 may be shifted relatively -with-the-bolt l0 into various positions correspondingjto movements promoted by a universal joint.

The sleeve supporting member 9 in its revoluble screw threaded relation with the bolt [0 and the pivotally mounted guide rod supporting sleeveyrnember 8, provide for; relatively universalflmovements and shifted 'relation of the "guide rod 1 relatively with thebolt' H! which is rigidlyconnected with the. abrasive Sheetclarnping member 4 by means of, welding, brazingflor otherwise: Y r i The spacer member I l is positioned on the bolt l9, intermediate the, abrasive sheet clamping member 4 and'the lower side of the sleeve supporting member 9,.as shown best in Fig. 1 of the drawing,- providing proper elevated position" of the guide rod supporting sleeve member 8 for accurately supporting the guide rod 1 inits. relation with the ,cuttinghangle of the abrasive surface 26; of the abrasive sheet, 2 in its relation with the shearblade held by the shear blade clar'npingrhembers 5 and '6.

The operation of my shear sharpener, is substantially as follows: When it is desired "to sharpenf'shears A with my shear sharpener, the two opposingshear blades B' and O arealterna'tely clamped between the shear blade clamping members 5 and 6, as shown best in Figs. 1

tion 5 a of the shear blade clamping member 5,

as shown vbest in Figs. 1 and 2 of the drawing.

This angle adjusting member I2 is provided with I upwardly extending side edge portions In which are arranged to embrace opposite side edges ofthe portion laof the guide rod 1, as shown best in Fig. 2 of the drawing. It will be noted that this angle adjusting member I2 is tapered'and "that opposite ends thereof are interchangeable in position providing ,a definite fixed variety of angles of j the shear blade clamping member 5 relatively with the guide rod 1. It will be further I noted that this angle adjusting member 12 vmay be entirely removed from the bolt l3. in its relation with the guide rod 1 and the shear blade clamping member 5, providing another angle of the shear blade clamping member 5 relatively with the guide rod 1. e A r The guide rod 1 is substantially circular in cross section, as shown in Fig. 3 of the drawing,

. and is reciprocally mounted .in the guide ro'd supporting sleeve member 8, as shown best in Fig.1 of the drawing.

1 ened.

and 2 of the drawing. When the shears A are clamped between the shear blade clamping members 5 and G, as shown best inFig. lof the drawing, the cutting edge of'the shear blade 3 is moved backwardly and forwardly upon the'abrasive surface 2a of the abrasive: sheet '2.. [The shear blade C, disposed in substantially vertical position, as shown best in Fig. 2 of the drawing is arranged in close relation with the side edge of the shear blade clamping member 5 so that "the entire length of the cutting edge of the horizontally disposed shear blade B may be sharp- It will be noted that the shearblade clamping members 5 and 6 may be adjusted in any angular relation with the guide rod 1, by means of the bolt l3 in its pivotal relation with the guide rod I.

By magnifying the cutting edge of a shear blade which has been sharpened upon my shear sharpener, it is easy to see the fine corrugated abrasions in the metal of the cutting edge. These fine corrugations, as hereinbefore described, are very useful in providing frictional engagement with the hair being cut by the shears so that the hair does not have a tendency to slip forwardly between the closing shear blades. As hereinbeforestated, abrasive sheets of varying abrasive coarseness or fineness may be employed. The particular abrasive papers Ifhave found best suited" for shear sharpening in ,connection with my shear sharpener are the abrasive paper sheets numbers 400, "7'5 320and 220. Other grades of abrasives may be I The guide rod supporting sleeve member 8 is pivotally mounted on the sleeve supporting memused as desired for sharpening shears and other instruments. abrasive provides an abrasive surface which is ad- The use of this particular type of justable in its coarseness or fineness and which may be renewed as desired for the formation of sharp and well defined corrugations in the cutting edge of the shear blade. The shear blade clamping members and 5 are adjustable relatively with each other by means of the nut Ma in its screw threaded relation upon the bolt M which is secured to the shear blade clamping member 5.

By tightening or loosening the nut Ma, the shear blade may be secured between the shear blade.

clamping members 5 and 6 or released therefrom. When the shear blade, in connection with the clamping members 5 and 6, is shifted backwardly and forwardly over the abrasive surface 2a, the guide rod 1 reciprocates in the guide rod supporting sleeve member 8 and holds the clamping members 5 and 6 together with the shear blade in proper angular relation with the abrasive surface 2a. If it is desired to sharpen the cutting edges of different shears at different angles, the angle adjusting member l2 may be reversed in its relation with the guide rod 1 onthe bolt l3 so that the tapered portions thereof intermediate the portion 1a of the guide rod 1 and the angularly extending portion 5a of the shear blade clamping member 5 provides varying fixed anabrasive sheet supporting plate I and a fresh' abrasive sheet 2 is placed over one sideof the abrasive sheet supporting plate I and the opposite ends of the abrasive sheet 2 are folded over the opposite ends of the abrasive sheet supporting plate I. The abrasive sheet clamping members 3 and 4 are then forced over the abrasive sheet 2 at opposite ends of the abrasive sheet supporting plate I, as shown best in Fig. 1 of the drawing.

Though I have shown and described a particular construction, combination and arrangement of parts and portions, I do not wish to be limited to this particular construction, combination and arrangement, but-desire to include in the scope of my invention, the construction, combination and arrangement substantially as set-forth in the appended claims.

Having thus described my invention, what I claim as new and desireto' secure by Letters Patent is:

1. In a shear sharpener of the class describd,

the combination of reciprocally mounted shear blade clamping means, a guide rod connected therewith, a reversibly. mounted wedge-like tapered angle adjusting member positioned intermediate said guide rod and said shear blade clamping means arranged for adjusting the angle of the shear for providing a properbevel on the shear blade, and universally operative means in supporting relation with saidguide rod, said shear blade clamping meanspivotally connected with said guide rod whereby the angle of the shear blade clamping means may be varied in relation with said guide rod.

2. In a shear sharpener-of the class described, r

the combination of reciprocally mounted shear blade clamping means, a guide rod connected therewith, a reversibly mounted. wedge-like tapered angle adjusting memberpositioned intermediate said guide rod and said shear blade clamping'means arranged for adjusting the angle of the shear for providing a proper bevel on the shear blade, universally operative means in supporting relation with said guide rod, said universally operative means including a pivotally mounted guide rod supporting sleeve member and a revolubly mounted sleeve supporting member, said guide rod supporting sleeve member pivotally connected with said sleeve supporting member at right angles to the revolubly. mounted axis thereof.

CHARLES B. MOZDY. 

